Atomic Layer Deposition of SnO₂ as an Electron Transport Material for Solid-State P-type Dye-Sensitized Solar Cells

Tin oxide (SnO2) as an electron transport material was prepared by atomic layer deposition in dye-sensitized NiO films to fabricate solid-state p-type solar cells using two organic dyes PB6 and TIP photosensitizers. Due the excellent mobility satisfactory penetration of SnO2 into film, a record photocurrent density over 1 mA cm–2 achieved with power conversion efficiency 0.14%. The effect inserted Al2O3 between on photovoltaic performance devices also investigated. results suggest that charge recombination can be significantly suppressed, showing prolonged lifetime enhanced photovoltage.